By David H. Benzing
This ebook offers a synthesis of the broad details to be had at the biology of Bromeliacea, a mostly neotropical relations of approximately 2700 defined species. the writer emphasizes reproductive and vegetative constitution, similar body structure, ecology, and evolution, instead of floristics and taxonomy. Guiding questions comprise: Why is that this relations inordinately winning in arboreal (epiphytic) and different generally tense habitats and why is that this kinfolk so vital to large fauna past pollinators and frugivores within the wooded area cover? remarkable and infrequently novel mechanisms that mediate water stability, tolerance for prime and coffee exposures, and mutualisms with ants have obtained a lot learn and make allowance attention-grabbing comparisons between plant taxa and support clarify why individuals of this taxon show extra adaptive and ecological style than so much different households of flowering crops. This quantity concentrates on functionality and underlying mechanisms, therefore it is going to around out a literature that in a different way typically ignores simple biology in want of taxonomy and horticulture.
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Extra resources for Bromeliaceae: Profile of an Adaptive Radiation
Pittendrigh (1948) who also anticipated some of the discoveries of the current generation of ecophysiologists by postulating how plant habit and aspects of leaves and roots account for the distribution of Trinidad’s bromeliads. 2. 4. 4. ) Genus Number of Ecological speciesa type Pitcairnia Portea Pseudaechmea Pseudananas Puya Quesnelia Racinaea Ronnbergia 295 9 1 1 194 15 57 11 I III III II I III IV III Steyerbromelia Tillandsia Ursulaea Vriesea Werauhia Wittrockia 3 518 2 227 64 12 I I, IV, V III I, IV, V IV III Geographic range Tropical America Southeastern Brazil Colombia and Bolivia Southeastern Brazil Predominantly Andean Southeastern Brazil Mostly Andean Panama to Peru, Southeastern Brazil Guayanan Shield Tropical America Mexico Tropical America Primarily Mesoamerica Southeastern Brazil Source: aFrom Luther and Sieff (1996).
H) Shield. (I) Leaf of Tillandsia hildae showing banding attributable to presence of trichomes distinguished by the widths of the shields. Parts D, G, H, redrawn from Tomlinson (1969). , Tillandsia funckiana, T. filifolia; Fig. 1). However, even the most congested foliage of this type casts little self-shade except where the blades are imbricate. Overlapped leaves along the tiny shoots of caulescent Tillandsia bryoides ¯ex outward most while the plant is fully hydrated (Fig. 1). Other exceptional taxa exhibit distichous organization (Dyckia estevesii, T.
17A). 15. Root and stem structure characteristic of many members of Bromeliaceae. Leaf color is exceptionally vivid and varied among the bromeliads, and trichomes often further ornament foliage. , Vriesea fosteriana; Fig. 17B). Foliar indumenta range from con¯uent to sparse and from relatively ®ne to coarse textured. , certain Cryptanthus species, Aechmea chantinii; Figs. 18C). 1). 16. Aspects of the leaves of Pitcairnioideae. (A) Puya raimondii, crosssection of blade half way between base and apex illustrating stomata, trichome and details of the mesophyll.